package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;

import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;


import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@Slf4j
@RestController
@RequestMapping("/dish")
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private CategoryService categoryService;

    /**
     * 新增菜品
     *
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);

        return R.success("新增菜品成功");
    }

    /**
     * 菜品信息分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();


        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(name != null, Dish::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo, queryWrapper);
        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");

        List<Dish> records = pageInfo.getRecords();

        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item, dishDto);

            Long categoryId = item.getCategoryId(); //分类id

            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null) {
                //分类名称
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            return dishDto;
        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);
        return R.success(dishDtoPage);

    }


    /**
     * 根据id查询菜品信息和对应的口味信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id) {

        DishDto dishDto = dishService.getByIdWithFlavor(id);

        return R.success(dishDto);

    }

    /**
     * 修改菜品
     *
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        return R.success("新增菜品成功");
    }


    /**
     * 根据id(批量)删除菜品信息
     *
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(Long[] ids) {
        List<Long> list = Arrays.asList(ids);
        log.info("删除菜品，id为{}", ids);

        dishService.removeByIds(list);

        return R.success("删除菜品成功");
    }

    /**
     * 根据id(批量)停售菜品信息
     *
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> updateMulStatus(@PathVariable Integer status, Long[] ids) {
        List<Long> list = Arrays.asList(ids);

        //构造条件构造器
        LambdaUpdateWrapper<Dish> updateWrapper = new LambdaUpdateWrapper<>();

        //添加过滤条件
        updateWrapper.set(Dish::getStatus, status).in(Dish::getId, list);

        dishService.update(updateWrapper);

        return R.success("菜品信息修改成功");
    }


    /**
     * 根据条件查询对应的菜品数据
     *
     * @return
     */

   /* @GetMapping("/list")
    public R<List<Dish>> list(Dish dish) {
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());

        //添加条件：查询状态为1(起售)的；
        queryWrapper.eq(Dish::getStatus,1);

        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(queryWrapper);

        return R.success(list);
    }
*/
    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null ,Dish::getCategoryId,dish.getCategoryId());
        //添加条件，查询状态为1（起售状态）的菜品
        queryWrapper.eq(Dish::getStatus,1);

        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);
        //查询口味信息

        List<DishDto> resultList = new ArrayList<>();
        for (Dish dishDo : list) {
            Long dishId = dishDo.getId();
            LambdaQueryWrapper<DishFlavor> lqw = new LambdaQueryWrapper<>();
            lqw.eq(DishFlavor::getDishId, dishId);
            //select * from dish_flavor where dish_id = 1538347829330595841;
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lqw);

            //把菜品和口味信息封装到新的对象中 dishDto
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(dishDo, dishDto);
            dishDto.setFlavors(dishFlavorList);

            resultList.add(dishDto);
        }

        return R.success(resultList);
    }
}
